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  <title>Performs a query on the database</title>

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</div><hr /><div id="mysqli.multi-query" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">mysqli::multi_query</h1>
  <h1 class="refname">mysqli_multi_query</h1>
  <p class="verinfo">(PHP 5)</p><p class="refpurpose"><span class="refname">mysqli::multi_query</span> -- <span class="refname">mysqli_multi_query</span> &mdash; <span class="dc-title">Performs a query on the database</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-mysqli.multi-query-description">
  <h3 class="title">说明</h3>
  <p class="para">面向对象风格</p>
  <div class="methodsynopsis dc-description">
   <span class="type">bool</span> <span class="methodname"><strong>mysqli::multi_query</strong></span>
    ( <span class="methodparam"><span class="type">string</span> <code class="parameter">$query</code></span>
   )</div>

  <p class="para rdfs-comment">过程化风格</p>
  <div class="methodsynopsis dc-description">
   <span class="type">bool</span> <span class="methodname"><strong>mysqli_multi_query</strong></span>
    ( <span class="methodparam"><span class="type"><a href="class.mysqli.html" class="type mysqli">mysqli</a></span> <code class="parameter">$link</code></span>
   , <span class="methodparam"><span class="type">string</span> <code class="parameter">$query</code></span>
   )</div>

  <p class="para rdfs-comment">
   Executes one or multiple queries which are concatenated by a semicolon.
  </p>
  <p class="para">
   To retrieve the resultset from the first query you can use
   <span class="function"><a href="mysqli.use-result.html" class="function">mysqli_use_result()</a></span> or <span class="function"><a href="mysqli.store-result.html" class="function">mysqli_store_result()</a></span>.
   All subsequent query results can be processed using
   <span class="function"><a href="mysqli.more-results.html" class="function">mysqli_more_results()</a></span> and <span class="function"><a href="mysqli.next-result.html" class="function">mysqli_next_result()</a></span>.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-mysqli.multi-query-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    <dt>
<em><code class="parameter">
link</code></em></dt>
<dd>
<p class="para">仅以过程化样式：由<span class="function"><a href="function.mysqli-connect.html" class="function">mysqli_connect()</a></span> 或 <span class="function"><a href="mysqli.init.html" class="function">mysqli_init()</a></span>
返回的链接标识。</p></dd>

    
     <dt>
<em><code class="parameter">query</code></em></dt>

     <dd>

      <p class="para">
       The query, as a string.
      </p>
      <p class="para">
       Data inside the query should be <a href="mysqli.real-escape-string.html" class="link">properly escaped</a>.
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-mysqli.multi-query-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   Returns <strong><code>FALSE</code></strong> if the first statement failed.
   To retrieve subsequent errors from other statements you have to call
   <span class="function"><a href="mysqli.next-result.html" class="function">mysqli_next_result()</a></span> first.
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-mysqli.multi-query-examples">
  <h3 class="title">范例</h3>
  <div class="example" id="example-1644">
   <p><strong>Example #1 <span class="methodname"><strong>mysqli::multi_query()</strong></span> example</strong></p>
   <div class="example-contents"><p>面向对象风格</p></div>
   <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$mysqli&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">mysqli</span><span style="color: #007700">(</span><span style="color: #DD0000">"localhost"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"my_user"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"my_password"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"world"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;check&nbsp;connection&nbsp;*/<br /></span><span style="color: #007700">if&nbsp;(</span><span style="color: #0000BB">mysqli_connect_errno</span><span style="color: #007700">())&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Connect&nbsp;failed:&nbsp;%s\n"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">mysqli_connect_error</span><span style="color: #007700">());<br />&nbsp;&nbsp;&nbsp;&nbsp;exit();<br />}<br /><br /></span><span style="color: #0000BB">$query&nbsp;&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">"SELECT&nbsp;CURRENT_USER();"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$query&nbsp;</span><span style="color: #007700">.=&nbsp;</span><span style="color: #DD0000">"SELECT&nbsp;Name&nbsp;FROM&nbsp;City&nbsp;ORDER&nbsp;BY&nbsp;ID&nbsp;LIMIT&nbsp;20,&nbsp;5"</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">/*&nbsp;execute&nbsp;multi&nbsp;query&nbsp;*/<br /></span><span style="color: #007700">if&nbsp;(</span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">multi_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$query</span><span style="color: #007700">))&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;do&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">/*&nbsp;store&nbsp;first&nbsp;result&nbsp;set&nbsp;*/<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">if&nbsp;(</span><span style="color: #0000BB">$result&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">store_result</span><span style="color: #007700">())&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;while&nbsp;(</span><span style="color: #0000BB">$row&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">$result</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">fetch_row</span><span style="color: #007700">())&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"%s\n"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">]);<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$result</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">free</span><span style="color: #007700">();<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">/*&nbsp;print&nbsp;divider&nbsp;*/<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">if&nbsp;(</span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">more_results</span><span style="color: #007700">())&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"-----------------\n"</span><span style="color: #007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br />&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;while&nbsp;(</span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">next_result</span><span style="color: #007700">());<br />}<br /><br /></span><span style="color: #FF8000">/*&nbsp;close&nbsp;connection&nbsp;*/<br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">close</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
   </div>

   <div class="example-contents"><p>过程化风格</p></div>
   <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$link&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">mysqli_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"localhost"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"my_user"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"my_password"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"world"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;check&nbsp;connection&nbsp;*/<br /></span><span style="color: #007700">if&nbsp;(</span><span style="color: #0000BB">mysqli_connect_errno</span><span style="color: #007700">())&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Connect&nbsp;failed:&nbsp;%s\n"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">mysqli_connect_error</span><span style="color: #007700">());<br />&nbsp;&nbsp;&nbsp;&nbsp;exit();<br />}<br /><br /></span><span style="color: #0000BB">$query&nbsp;&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">"SELECT&nbsp;CURRENT_USER();"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$query&nbsp;</span><span style="color: #007700">.=&nbsp;</span><span style="color: #DD0000">"SELECT&nbsp;Name&nbsp;FROM&nbsp;City&nbsp;ORDER&nbsp;BY&nbsp;ID&nbsp;LIMIT&nbsp;20,&nbsp;5"</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">/*&nbsp;execute&nbsp;multi&nbsp;query&nbsp;*/<br /></span><span style="color: #007700">if&nbsp;(</span><span style="color: #0000BB">mysqli_multi_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$query</span><span style="color: #007700">))&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;do&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">/*&nbsp;store&nbsp;first&nbsp;result&nbsp;set&nbsp;*/<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">if&nbsp;(</span><span style="color: #0000BB">$result&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">mysqli_store_result</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">))&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;while&nbsp;(</span><span style="color: #0000BB">$row&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">mysqli_fetch_row</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">))&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"%s\n"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">]);<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">mysqli_free_result</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">/*&nbsp;print&nbsp;divider&nbsp;*/<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">if&nbsp;(</span><span style="color: #0000BB">mysqli_more_results</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">))&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"-----------------\n"</span><span style="color: #007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br />&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;while&nbsp;(</span><span style="color: #0000BB">mysqli_next_result</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">));<br />}<br /><br /></span><span style="color: #FF8000">/*&nbsp;close&nbsp;connection&nbsp;*/<br /></span><span style="color: #0000BB">mysqli_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
   </div>

   <div class="example-contents"><p>以上例程的输出类似于：</p></div>
   <div class="example-contents screen">
<div class="cdata"><pre>
my_user@localhost
-----------------
Amersfoort
Maastricht
Dordrecht
Leiden
Haarlemmermeer
</pre></div>
   </div>
  </div>
 </div>


 <div class="refsect1 seealso" id="refsect1-mysqli.multi-query-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="mysqli.query.html" class="function" rel="rdfs-seeAlso">mysqli_query()</a> - 对数据库执行一次查询</span></li>
    <li class="member"><span class="function"><a href="mysqli.use-result.html" class="function" rel="rdfs-seeAlso">mysqli_use_result()</a> - Initiate a result set retrieval</span></li>
    <li class="member"><span class="function"><a href="mysqli.store-result.html" class="function" rel="rdfs-seeAlso">mysqli_store_result()</a> - Transfers a result set from the last query</span></li>
    <li class="member"><span class="function"><a href="mysqli.next-result.html" class="function" rel="rdfs-seeAlso">mysqli_next_result()</a> - Prepare next result from multi_query</span></li>
    <li class="member"><span class="function"><a href="mysqli.more-results.html" class="function" rel="rdfs-seeAlso">mysqli_more_results()</a> - Check if there are any more query results from a multi query</span></li>
   </ul>
  </p>
 </div>


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